They are probably the most popular optical phenomena, so here is our MetMatters guide to how rainbows form with some stunning examples from last year's competition.

Have you ever felt the Xlokk blow, seen a fire rainbow or avoided yellow snow? From aurora to zephyr, no letter is missing from the Royal Meteorological Society’s Weather A to Z book.

Halloween can be a scary time of year when it comes to the weather. From ghost-grey fogs to howling gales, just about anything is possible.  Here’s a quick round up of some of the best spooky weather phenomena.

Many of the most amazing pictures submitted to 'Weather Photographer of the Year' showcase optical phenomena, but what causes them..?

What is the science behind the Northern Lights or Aurora Borealis? Find out and maximise your chances of witnessing this incredible spectacle!

CloudCatcher is a beautiful new citizen science project on the Zooniverse app: here’s why you should take part!

Rainbows are one of the most admired meteorological phenomena across the globe, but how are they formed?

Could your fireworks show be affected by the weather?

A few seasonal weather facts